Gamma-ray imaging of D and 4He ions accelerated by ion-cyclotron- resonance heating in JET plasmas

被引：67

作者：

Kiptily, VG ^{[1
]}

Adams, JM

Bertalot, L

Murari, A

Sharapov, SE

Yavorskij, V

Alper, B

Barnsley, R

de Vries, P

Gowers, C

Eriksson, LG

Lomas, PJ

Mantsinen, MJ

Meigs, A

Noterdaeme, JM

Orsitto, FP

机构：

[1] UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[2] ENEA, EURATOM Assoc, CNR, Ctr Ric Energia, I-00044 Frascati, Italy

[3] ENEA, EURATOM Assoc, Consorzio RFX, I-35127 Padua, Italy

[4] Univ Innsbruck, Inst Theoret Phys, OEAW Assoc, EURATOM, A-6020 Innsbruck, Austria

[5] Ukrainian Acad Sci, Inst Nucl Res, UA-252028 Kiev, Ukraine

[6] CEN Cadarache, CEA, DSM, DRFC,Assoc Euratom, F-13108 St Paul Les Durance, France

[7] Aalto Univ, EURATOM Assoc, FIN-02015 Espoo, Finland

[8] Max Planck Inst Plasma Phys, EURATOM Assoc, D-85748 Garching, Germany

[9] Univ Ghent, Dept EESA, B-9000 Ghent, Belgium

来源：

NUCLEAR FUSION | 2005年 / 45卷 / 05期

关键词：

D O I：

10.1088/0029-5515/45/5/L01

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Gamma-ray images of fast D- and He-4-ions accelerated with third-harmonic ion-cyclotron-resonance heating of He-4-beam were simultaneously recorded for the first time in JET tokamak experiments dedicated to the investigation of burning plasmas with 3.5 MeV fusion alpha (a) particles. Gamma (gamma) rays, born as a result of nuclear reactions, Be-9(He-4, n gamma)C-12 and C-12(D, p gamma)C-13, between the fast ions and the main plasma impurities, are measured using a two-dimensional multicollimator spectrometer array, which distinguishes the gamma-rays from accelerated D- and He-4-ions. Tomographic reconstruction of the gamma-ray emission profiles gives images of the fast-ion population in the poloidal cross-section. The potential of this technique to visualize several energetic ion species and to determine their behaviour in different plasma scenarios is demonstrated.

引用

页码：L21 / L25

页数：5

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